Chlorofluorocarbons and Ozone Depletion - American Chemical Society
WEBApr 18, 2017 · At the University of California, Irvine, F. Sherwood Rowland and Mario J. Molina discovered that chlorofluorocarbons (CFCs) could deplete Earth’s atmospheric ozone layer, which blocks the sun’s damaging ultraviolet rays.
7.3: Depletion of the Ozone Layer - Chemistry LibreTexts
WEBFeb 13, 2023 · Which reactions demonstrate the destruction of the ozone layer? Cl + O 3-----> ClO + O 2 and ClO + O -----> Cl + O; How do CFC's destroy the ozone layer? the atomic chlorine freed from CFC reacts in a catalytic manner with ozone and atomic oxygen to make more oxygen molecules
WEBthat chlorofluorocarbons—CFCs— could destroy ozone, a molecule made up of three oxygen atoms, O. 3, in Earth’s stratosphere. That strato-spheric ozone absorbs ultraviolet ra-diation that otherwise would reach the surface of Earth. At the time, CFCs were in wide use in refrigera-tion, air conditioning and aerosol spray cans. The compounds ...
Ozone Depletion Web Module - University of Michigan
WEBThere are two specific mechanisms of interest, which lead to the net destruction of ozone. Using the mentioned reactions in a concise system, we can develop a model for the catalytic destruction of O 3 in the ozone layer by chlorine released from CFCs.
Ozone layer 'rescued' from CFC damage - BBC
WEBFeb 10, 2021 · A steady decline in the levels of ozone-harming CFC chemicals in the atmosphere has resumed, scientists say. This follows a recent, dangerous pause in that downward trajectory, which could have...
THE CHEMISTRY OF OZONE - University of Delaware
WEBThe center chlorine radical is the product of several reactions, namely that of UV radiation and CFCs, and also the reagent of the destruction process. The bottom left contains the ozone cycle, containing the natural formation and destruction of O 3 .
WEBChlorofluorocarbons and Ozone Depletion. At the University of California, Irvine, F. Sherwood Rowland and Mario J. Molina discovered that chlorofluorocarbons (CFCs) could deplete Earth’s atmospheric ozone layer, which blocks the sun’s damaging ultraviolet rays.
13.9: Application- The Ozone Layer and CFCs
WEBYou are probably aware of the danger posed to the earth's protective stratospheric ozone layer by the use of chlorofluorocarbons (CFCs) as refrigerants and propellants in aerosol spray cans. Freon-11, or CFCl 3, is a typical CFC that was widely used until fairly recently.
A Level Radical Reactions CFCs and the Ozone Layer
WEBChlorofluorocarbons (CFCs) are haloalkane molecules where all the hydrogen atoms have been replaced by chlorine and fluorine atoms. Ozone (O 3 ) in the upper atmosphere acts as a chemical sunscreen, it absorbs a lot of the ultraviolet (UV) radiation which can cause sunburn and even skin cancer.
Ozone Depletion - Chemistry: AQA A Level - Seneca
WEBOzone Depletion. Between 1928 and 1978, halogenoalkanes called chlorofluorocarbons (CFCs) were widely used in industry. These CFCs often escaped into the atmosphere where they depleted the ozone layer.
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